EP 0521444 B2 20010124 - Method and apparatus for producing a fiber web
Title (en)
Method and apparatus for producing a fiber web
Title (de)
Verfahren und Anlage zur Herstellung einer Faserbahn
Title (fr)
Méthode et appareil pour la production d'une voile de fibres
Publication
Application
Priority
- JP 18809591 A 19910702
- JP 35328891 A 19911217
- JP 35941891 A 19911227
Abstract (en)
[origin: EP0521444A1] The present invention relates to an apparatus for producing a fiber web comprising a feeder 1 for supplying a fiber material, a plurality of fiber opening cylinders 21 ,22 ,23 , ... ...2n (n is a natural number) mounted adjacent to one another for transferring and opening the fiber material fed from the feeder 1 and having metallic wires 2a mounted to the surface thereof, a conveyor 7 arranged for receiving the opened fiber unloaded from the fiber opening cylinder 2n mounted at the outlet end, and a suction box 8 arranged beneath the conveyor 7 for drawing the opened fiber towards the conveyor 7 by a sucking action, said fiber opening cylinders 21 ,22 ,23 , ... ...2n being enclosed in a housing 3 which has fiber transfer openings 4 between any two adjacent fiber opening cylinders and a fiber releasing opening 5 for unloading the opened fiber from the last fiber opening cylinder 2n, and also arranged so that any two adjacent cylinders can rotate in opposite directions. The present invention also provides a method of producing a fiber web using the above apparatus, in which at least one of the fiber opening cylinders 21 ,22 ,23 , ... ...2n is driven to produce a centrifugal acceleration of more than 3.4 x 10<5> cm/sec<2> for acting on the fiber material. As a result, a fiber web which is non directional and uniform is produced. Also, a fiber web in which the containing ratio of each fiber material gradually increases or decreases to the direction of the thickness of the fiber web, will be produced from two or more different fiber materials which are different in the resistance to peeling on the last fiber opening cylinder 2n. With the use of the apparatus or method of the present invention, a fiber web can be produced which is applicable to unwoven fabrics, filters, battery separators, FRP substrates, adhesive tapes, etc. <IMAGE>
IPC 1-7
IPC 8 full level
D04H 1/72 (2012.01)
CPC (source: EP KR US)
D04H 1/72 (2013.01 - EP US); D04H 17/00 (2013.01 - KR)
Citation (opposition)
Opponent :
- DE 2712650 C2 19840112
- DE 1114127 B 19610921 - HERGETH K G MASCHINENFABRIK UN
- US 2780839 A 19570212 - YOUNG RAY C, et al
- Thesis of Dr. Konrad F. Gilhaus " Ein Beitrag zum Mechanismus der Baumwollreinigung" Rheinisch-Westfälische Technische Hochschule Aachen 1981, pages 166-167 and 172 - 173
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0521444 A1 19930107; EP 0521444 B1 19970528; EP 0521444 B2 20010124; DE 69219954 D1 19970703; DE 69219954 T2 19970911; DE 69219954 T3 20010426; KR 930002577 A 19930223; KR 940006859 B1 19940728; US 5375298 A 19941227; US 5430911 A 19950711
DOCDB simple family (application)
EP 92111023 A 19920630; DE 69219954 T 19920630; KR 920011742 A 19920702; US 32163094 A 19941012; US 90702292 A 19920701